In the past, horses were used to the development of means of transport and communication and spread of agricultural machinery. However, the quality of human life improved, the range of uses of horses changed for purposes related to cultural life, such as leisure activities and sightseeing (Seo et al., 2016).According to 2016 report, about 26,000 horses are breeding in Korea and 57.2% of them are breeding in Jeju island (Seo et al., 2016). The horses breeding in Jeju is-land are subdivided into Halla horses (75.1%), Jeju horses (6.1%) and Thoroughbred horses (18.8%) (Seo et al., 2016).To improve the ability of the Jeju horse in racing, crossbreeding with the Thoroughbred horse was initiated. This led to the emergence of hybrid breeds, such as the Halla horse.Halla horse is crossbreed between Jeju and Thoroughbred horses and is used for riding, racing and meat production. But, a little research has been conducted on Halla horses because of the perception of crossbreed and people's weighted interest toward Jeju horses.
Meat and carcass quality attributes are important factors influencing consumer preference and profitability in the pork industry. Single nucleotide polymorphisms (SNPs) are essential for livestock breeding and improvement. In the present study, the pig Perilipin 2 (PLIN2) gene was characterized with the aim of detecting genetic variation at these loci in relation to economic traits in Berkshire pigs. Four SNPs (G6714C, G6813A, G10340A, and G10632A) were detected in this studied. Statistical analysis indicated that G6714C was significantly associated with the National Pork Producers Council (NPPC) color score, G6813A, and G10340A significantly affected NPPC color score and NPPC marbling score, and G10632A significantly affected backfat thickness (BF) (p < 0.05). Therefore, the molecular markers used in the present study might provide a useful basis for identification and improvement of traits in the Berkshire pigs.
Chicken is one of the major livestock, especially for supplying proteins to human and the Korean native chicken (KNC) has been documented since approximately 2,000 years ago (Seo et al., 2013;Seo et al., 2015). But, due to their poor commercial performance, Korean native chicken breeds almost became extinct and the breeds that existed before the Korean War (1950)(1951)(1952)(1953), are almost all extinct (Seo et al., 2013;Choi et al., 2015). After the Korean War, commercial native chicken companies maintained various independent breeds while continuing production and market distribution (Seo et al., 2018).
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